As some of the tech sector’s heaviest hitters prep for a meeting this week with president-elect Donald Trump, they need to make sure they get answers to critical questions about issues that could affect not only their businesses but the U.S. economy in general. While the meeting has been called by Trump, the Silicon Valley executives should be prepared to set some of it themselves so they aren’t blindsided by policy shifts that can affect their success. Items of interest range from encryption to China policy.